package com.sky.gray.config;

import com.sky.gray.common.GrayLoadBalancer;
import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.loadbalancer.core.ReactorLoadBalancer;
import org.springframework.cloud.loadbalancer.core.ServiceInstanceListSupplier;
import org.springframework.cloud.loadbalancer.support.LoadBalancerClientFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.env.Environment;

@Configuration
public class LoadBalancerGrayAutoConfiguration {

    @Bean
    @ConditionalOnBean(LoadBalancerClientFactory.class)
    public ReactorLoadBalancer<ServiceInstance> grayReactorLoadBalancer(Environment environment,
                                                                        LoadBalancerClientFactory loadBalancerClientFactory) {
        String name = environment.getProperty(LoadBalancerClientFactory.PROPERTY_NAME);
        return new GrayLoadBalancer(name, loadBalancerClientFactory.getLazyProvider(name, ServiceInstanceListSupplier.class));
    }
}
